Open AccessExperimental investigation of heterodyne quantum key distribution in the S-band or L-band embedded in a commercial C-band DWDM system
Author(s) -
Sebastian Kleis,
Joachim Steinmayer,
R.H. Derksen,
Christian Schaeffer
Publication year - 2019
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.016540
Subject(s) - wavelength division multiplexing , quantum key distribution , optics , channel spacing , physics , c band , channel (broadcasting) , heterodyne (poetry) , quantum channel , heterodyne detection , optoelectronics , quantum , telecommunications , quantum entanglement , computer science , laser , quantum mechanics , wavelength , photon , acoustics
The tolerance of continuous-variable quantum key distribution to co-propagating DWDM channels is investigated. The quantum channel is operated in the S-band or L-band and multiplexed with a commercial C-band DWDM system. The results show that, compared to previously proposed configurations, the number of co-propagating channels can be doubled. At a fiber length of 25 km, 56 DWDM channels with a total launch power of 14.5 dBm are tolerated by the quantum channel.